Church Lake: AdBlue in the Diesel Tank? Leave It Off
Engine off, ignition off: that's where you start if AdBlue has gone into your diesel tank. Urea mixed in water is what AdBlue is. The trouble begins once it is pulled through your lines — it will not ignite, and it won't blend with diesel. If the engine has not run yet, AdBlue in a diesel tank is normally emptied and carefully purged where your car sits in Church Lake. First, ring us on 0333 366 0103.
Your next steps straight away, Church Lake: AdBlue in your diesel tank
Do:
- Pocket the keys, which stops anyone switching the electrics on.
- Hazards on, if moving traffic is anywhere near.
- The empty bottle or the till receipt tells us the fluid and the amount, so do not bin it out.
- Give us a postcode starting SA73 1, or whichever street is nearest, and the van reaches you directly — so call from wherever you are.
Things not to do:
- Shifting your vehicle just a few yards is no reason to start the engine.
- Do not switch the ignition on. On many diesels that alone runs the fuel pump.
- Do not top up with diesel to dilute it. AdBlue doesn't dilute in diesel; it separates out.
- Keep the car where it is rather than driving it anywhere, even a short stretch up Military Road.
- Beside the road, do not attempt draining it yourself.
Ask the people behind the counter to help you move your vehicle away from the island if you are on a forecourt in Church Lake, whether it is the Texaco or elsewhere. At your own drive, do not move it at all.
AdBlue in a diesel tank: what it does
The motor is not what AdBlue is made for; the exhaust is. Its own tank keeps it, and from there it is sprayed into the exhaust, and there it cleans the fumes. Nothing in it is meant to pass through a fuel pump, and nothing in a fuel pump is made to handle it.
Poured in with the diesel, it stays apart rather than mixing — entirely different from fuel. Denser than diesel, it drops and pools below it — the same place the intake sucks from. Simplest of all: a vehicle that had AdBlue in Glenowen overnight and hasn't turned since. The AdBlue waits at the base of that tank, untouched — though it will be first through once the motor runs, before any diesel at all.
It does two kinds of damage from there. As its water goes, the urea left behind crystallises, and the crystals block filters and settle in fine passages. And it is corrosive to some of the metals a fuel system is made from, so it keeps running on the components it hits for as long as it remains there. A car left sitting in Church Lake with AdBlue already in its lines is worse by the morning; one with AdBlue only in its tank is not. The water in it causes harm of its own: your high-pressure pump and the fuel injectors depend on diesel to lubricate them, and water offers them nothing.
AdBlue in a diesel: why it's frequently worse than petrol
Petrol pumped into a diesel on Asda's forecourt leaves the fuel thin — that is the main fault. Harm just comes from running on it. Mixed into the diesel and left inside that tank, it causes none.
AdBlue in a diesel is a fault of the wrong substance altogether. Not burning, it can't just be run through. Crystals and corrosion remain after the next fill, and AdBlue separates back from your diesel, so thinning it won't work. Hence the flush matters so much, and trying the engine "to see" does more harm with AdBlue than nearly any other mistake — in Great Honeyborough or the centre of Church Lake equally.
The good news is the same as with petrol. If your engine hasn't run, the AdBlue is still in that tank, and your tank is the quickest part of a fuel system to clear, wherever in Pembrokeshire the car is standing.
How AdBlue ends up in a diesel tank around Church Lake
No one means to do it. The AdBlue filler on plenty of cars sits right next to your diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. Most of the time it happens with a bottle bought on the way home and poured in on the driveway, not at the pump.
The ways it occurs are few and familiar. A warning light comes on during the school run, and the top-up happens in a hurry outside the local primary school. Close to Church Way, a driver pours a container in on that drive in the evening. Or a driver new to that flap tops up the vehicle after dark, stopped in the car park by Ferry Inn.
Rented cars, new cars, fleet cars, or the second car in a family with one of each: the least familiar vehicles see it the most. An identical mistake, same first step — leave it switched off — wherever you happen to be around Church Lake or the remainder of Pembrokeshire.
Church Lake: started the engine with AdBlue in the diesel tank?
Then the tank is no longer where the AdBlue is. With any running time, it goes on to the high-pressure pump and each injector, after passing through the filter and lines.
Expect lumpy running, exhaust smoke, falling power, warnings on your dash, or a stall — coming back from Charlton Place Park, say, or midway across Church Lake. Once you safely can, stop then turn everything off — with no turning it on again to see. More of that is pulled through with each start.
Church Lake sits under 50 miles from the M4; if you were on it, exit by the first junction and stop somewhere safe instead of driving on.
Distance matters: each mile pushes the AdBlue further into your system, and so heading for St Davids, under 25 miles away, gives a far bigger job than hopping across Church Lake to the car park by Neyland Library. Let us know about how far it had come.
We do all of the cleaning where your car has stopped, and once your engine has been started there is more of it. Very rarely does it leave lasting damage when it is caught quickly.
What does an AdBlue drain on a diesel involve around Church Lake?
A road beside Wesley Methodist Church, a driveway, a layby or a forecourt: anywhere the vehicle has stopped around Church Lake, we come to it. Three answers shape the work, so before anything else we ask which fluid got in, roughly what quantity, plus if the motor has turned over.
The contaminated diesel and the urea leave together after your tank is drained, right there. Residue from AdBlue won't flush away unaided, and so the fuel system gets a careful flush, which counts far more with urea than with petrol. The filter is cleaned, or replaced where it needs to be; fresh diesel goes in; and the car is tested. About half an hour on site is usual for most jobs where your motor hasn't run. Our pumping gear is explosion-proof, so a live forecourt is no issue, and it is quiet enough for a residential street after dark.
The last step is to bleed the system on clean diesel. At that point our technicians start the engine and you drive off, whether from a parking bay by Pembroke Dock or a drive around Church Lake. The check before our engineers head off is that it runs smoothly on new diesel. The whole job is done where the vehicle is, so it never has to go to a workshop. Insurers ask for a VAT invoice and an engineer report, and you get both afterwards.
About Church Lake, for a moment
Church Lake is a suburban area in Pembrokeshire, situated near the coast of Wales. Church Lake sits at a low elevation of around 7 metres, close to nearby settlements such as Neyland and Neyland Vale. Church Lake is characterized by its predominantly semi-detached housing stock, reflecting the area's residential nature. Church Lake is located near the city of St Davids, which is approximately 17.8 miles away.
AdBlue drains across Church Lake and Pembrokeshire
Our vans that answer AdBlue jobs in Church Lake also cover the locations round it, Neyland Vale, Neyland and Mascle Bridge among them, and most of Pembrokeshire beyond, across the SA postcode area. If you are near a boundary, or somewhere hard to explain, ring and ask instead of assuming.
A mobile service suits Church Lake, a residential suburb: you have no need to take your vehicle to us, because our technicians drain it there, on a driveway, a residential street, a car park or a forecourt.
What AdBlue in a diesel tank costs to put right around Church Lake
Not one flat figure could be honest, because each job differs. The price moves first with how long, if at all, the motor has been running, and next with the quantity of AdBlue that went in. After that it rests on where the vehicle is and whether our van can reach it safely, which is easier on an open driveway than in a tight gap behind Isambard Kingdom Brunell.
That is why every call from Church Lake starts with the same three questions, asked before giving a figure, not after: what got in, how much, and if it has run. Those answers turn a range into a straight quote.
Priced by phone before the van sets out, the job is settled on the day — card or phone, nothing in advance. Look at your policy whilst we are on the way: many carry misfuelling cover.
Beside the car in Church Lake, still?
Then, the most helpful thing to do with the vehicle is to not touch it. Keys out; engine and ignition off. Call 0333 366 0103: AdBlue, roughly how much, and whether the engine ran is all we need. Petrol in Diesel handles the remainder throughout Pembrokeshire, Church Lake included.